七年级数学下册整式的加减法计算题 748.docx

1、七年级数学下册整式的加减法计算题 748 1 (6x2 xyx)( x27xy7x) 4 6 1 (xy5y25)(x2xy y26) 7 7 5 5 (xyy)(xyx4) 4 4 (5y5x3z2)( y2x5z2) (9k25k)(9k27k3) (2a23a b)(8a29a6b) 6x2(6x26x7)(7x7) 3y2(6x2y)(9x24y2) 1 ( x2 xyx)( x25xy4x) 4 4 1 (xy8y21)(x2xy5y27) 5 5 6 1 (xyy)(xyx6) 5 5 (6y6x4z2)(5y x5z2) (2k27k)(5k26k2) (2a25a6b)(6a2

2、3a5b) 5x2(9x23x3)(5x2) 5y2(6x2y)(8x28y2) 5 (5x29xyx)(6x28xy9x) 4 9 6 (xy6y26)(x2xy6y29) 8 7 3 5 (xyy)(xyx9) 4 6 (9y5x6z2)(3y7x z2) (7k2 k)(4k24k5) (9a2 a7b)(7a27a8b) 9x2(4x28x7)(3x2) 2y2(9x2y)(8x2 y2) 1 (9x24xyx)(8x28xy6x) 4 5 8 (xy y28)(x2xy y29) 4 7 1 1 (xyy)(xyx1) 4 7 (6y x2z2)(9y4x3z2) (8k2 k)(3

3、k23k4) (4a26a5b)( a2 a5b) 9x2(3x28x4)(6x3) 7y2(5x2y)(7x24y2) 1 (5x25xyx)(3x29xy2x) 7 1 2 (xy6y23)(x2xy8y22) 5 3 4 5 (xyy)(xyx4) 3 6 ( y6x6z2)(7y3x9z2) ( k2 k)(9k25k5) (8a27a b)(3a28a4b) 7x2(5x2 x2)(8x9) 7y2(6x2y)(6x22y2) 1 (8x2 xyx)(3x29xy3x) 8 7 1 (xy9y23)(x2xy9y24) 8 4 4 1 (xyy)(xyx9) 5 3 (9y7x z2)(6y4x2z2) (7k27k)(4k24k5)